[MTD] OneNAND Simulator support

This simulate various OneNAND flash chips for the MTD onenand layer.
It's simple implementation, only basic operations.
It don't support the recent changes in NANDSIM such as lazy block allocation,
bitflip, and so on.

Note: This passed nand-tests.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

drivers/mtd/onenand/Kconfig

@@ -56,4 +56,11 @@ config MTD_ONENAND_2X_PROGRAM
 
 	  And more recent chips
 
+config MTD_ONENAND_SIM
+	tristate "OneNAND simulator support"
+	depends on MTD_PARTITIONS
+	help
+	  The simulator may simulate various OneNAND flash chips for the
+	  OneNAND MTD layer.
+
 endif # MTD_ONENAND

drivers/mtd/onenand/Makefile

@@ -8,4 +8,7 @@ obj-$(CONFIG_MTD_ONENAND)		+= onenand.o
 # Board specific.
 obj-$(CONFIG_MTD_ONENAND_GENERIC)	+= generic.o
 
+# Simulator
+obj-$(CONFIG_MTD_ONENAND_SIM)		+= onenand_sim.o
+
 onenand-objs = onenand_base.o onenand_bbt.o